Accelerator Pump Rebuild Kits Poor performance & bogging on acceleration are signs that you may need to rebuild the accelerator pump. All of the necessary parts to rebuild the accelerator pump circuit are included. Kits for vehicles with multiple carburetors include all components for all carburetors. Fits: KTM 250 SXF 2005-2006 2008-2010 400 EXC 2000-2002 400 EXCG 2004-2006 400 SX 2000-2002 450 EXC 2003-2004 2008-2011 450 EXCR 2008 450 SMR 2005-2007 450 SX 2003-2006 450 SXF 2007-2012 450 XC 2004-2007 450 XCF 2008-2009 450 XCRW 2008 450 XCW 2007 2009-2011 505 SXF 2008 505 XCF 2008-2009 520 EXC 2000-2002 520 SX 2000-2002 525 EXC 2003-2006 525 SX 2003-2006 530 EXC 2009-2011 530 XCRW 2008 530 XCW 2009-2011 560 SMR 2006-2007 625 SMC 2004-2006 625 SXC 2003 2005